When would the Earth eventually become a black hole?

It was one thing for Dolezal to identify with, appreciate and even partake in black culture, some critics said, but it was another thing for her to try to become black, going so far as to change her physical appearance.

一些批评人士称，对于多尔扎尔来说，认同、欣赏甚至分享黑人文化是一件事，但试图成为黑人是另一件事，她甚至改变了自己的外貌。

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High magnetic field possesses revolution, orientation and gathering action for tissue of Al-4% Cu alloy aging. When magnetic field strength is enlarged, the action is built up and accumulative banding precipitated phases become black and long.

研究还发现强磁场作用使Al-4%Cu合金时效析出组织具有明显的旋转取向和聚集效应，随着磁场强度的增大，这种旋转取向和聚集效应增强，聚集的条状析出相呈黑，长形态。

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Had a clear bottoming out of the river has become black, and some covered with grass, resulting in fish, shrimp, fresh air, all floating in the water.

原本一条条清澈见底的小河已经变得乌黑，有些还长满了绿草，以致鱼、虾呼吸不到新鲜空气，全部漂浮在水面上。

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In circulating cooling water system, the large increase of microorganism can make cooling water become black and olid and pollute the environment.

在循环冷却水系统中，微生物大量繁殖会使冷却水颜色变黑，发生恶臭，污染环境；

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Blacken 'is a causative verb meaning cause to become black'.

blacken是使役动词，意思是‘使变黑’。

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The hair can also become black because of the damage that this isn't the permanence.

头发还能变黑因为这不是永久性的损坏。

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The street had suddenly become black.

街上一下子变得漆黑。

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It seemed to her that her soul had become black since the day before.

她觉得她的灵魂一天比一天变得更黑了。

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In the history of Detroit, it gradually become black from white.

底特律是一个典型的由白变黑的城市。

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Study of Abrasive Wear Resistance of Bionics Non-smooth Topography on Roller Surface Made by Laser Carving Technology

轧辊表面激光雕刻仿生非光滑形态耐磨性研究

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Experimental Study of Electric-Field Poling in LiNbO_3 Crystal by Femtosecond Laser Carving

飞秒激光刻划铌酸锂实现极化反转的实验研究

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In this paper, the working theory of3-axises laser carving machine was elaborated.

讨论了一台三轴联动数控激光雕刻机的技术实现。

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3D camera system for realistic laser carving portrait

面向真实感激光内雕刻的立体照相系统

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Testing Tactics of Forging Seals and Document by the Way of Laser Carving

激光雕刻法伪造印章印文的检验技巧

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Development of image automatic programming software used in rapid laser carving based on VC++ Studio

基于VC++的图像快速雕刻自动编程软件开发

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The Study of Laser Carving Machine for Seals

原子印章YAG激光雕刻机的研究

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Technology Research on CO_2 Laser Carving

采用CO2激光器进行激光雕刻工艺研究

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The Research and Design on the Control System of Two-dimension Laser Carving Machine Based on Computer Parallel Port

基于PC并口的激光雕刻机控制系统的研究设计

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Experimental study about 3-D laser carving of Al_2O_3 ceramic

Al2O3陶瓷的激光三维雕刻实验研究

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Experimental Research on the Laser Carving Process of Earthenware

激光刻陶工艺的试验研究

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